dangerous malfunction: unintended operation of the appliance that may impair safety. The equipment itself does not operate as specified and may endanger safety. Such as fans, the starting capacitor of the internal AC asynchronous motor has failed in the form of a short circuit or an open circuit; in the case of air-conditioners, the outlet…
rated impulse voltage: voltage derived from the rated voltage and the overvoltage category of the appliance, characterizing the specified withstand capability of its insulation against transient overvoltages. For beginners, it is not really necessary to understand the physical meaning of this definition. The main use of this voltage value in the standard is to determine…
normal operation: conditions under which the appliance is operated in normal use when it is connected to the supply mains. normal operation is the state of working in the way specified in the instruction manual usually. Sometimes it is also the state of working in the way specified in the standard, although this mode of…
If there are ambiguities in our understanding of the standards, or if there are no clear requirements in the standards, or if we are unsure of the strength of the standards’ implementation, at first, we can by checking the following webpage to see if there is a decision that we can refer to for the…
There are 7 rated item from clause 3.1.1 to clause 3.1.8 except for clause 3.1.3, such as rated voltage, rated voltage range, rated power input, rated power input range, rated current, rated frequency, rated frequency range. To summarize the intent of the standard, “rated” represents a set of parameters assigned to the appliance by the…
rated frequency range: frequency range assigned to the appliance by the manufacturer, expressed by its lower and upper limits. The rated frequency in the form of a range, generally 50-60 Hz, but all countries in the world have either 50 Hz or 60 Hz mains frequency, there is no intermediate frequency value, so the definition…
rated frequency: frequency assigned to the appliance by the manufacturer. In generally, the rated frequency is the standard utility frequency of the target market country at the time the product is designed. Since worldwide, there are only two utility frequencies, 50Hz and 60Hz, the value can only be 50Hz or 60Hz, or both 50 and…
rated current: current assigned to the appliance by the manufacturer.NOTE If no current is assigned to the appliance, the rated current is– for heating appliances, the current calculated from the rated power input and the rated voltage; – for motor-operated appliances and combined appliances, the current measured when the appliance is supplied at rated voltage…
rated power input range: power input range assigned to the appliance by the manufacturer, expressed by its lower and upper limits. This definition corresponds to the rated voltage range, which means that the rated power input is labeled with a range of upper and lower limits.Example: A quartz tube room heater with a rated voltage…
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